Fluid flow conduit



July 28, 1931. A. M. TROGNER FLUID FLOW coN'DuIT 2 Sheets-Sheet l Filed May 20, 1950 INVENTOR Arthur M. Trognen ATTORNEY July 28, 1931. A. M. TROGNER FLUID FLOW CONDUI'I Filed May 20, 1930 2 Sheets-Sheet 2 INVENTOR Arthur .M. Wagner.

resistance along the line compact construction Patented July 1931 ,anrmm M. momma, or mL woon, NEW

JERSEY, ASSIGN OR TO WIRED-RADIO, INC.,

on rmw xonx, N. Y., A oonron'mron or DELAWARE FLUID now comm Application filed m 20,

My invention tron discharge apparatus and specifically relates to flui .flow conduits employed with fluid cooled electron discharge. evices used in high power radio transmitting. I

In the use of electron discharge devices of the fluid-cooled exterior anode type, it is essential to provide a relatively high resistance along the. line of fluid flow away from the anode. This has heretofore been usuallyaccomplish'ed b length of rub ,er hose throu h which the cooling fluid may pass, the ose being of suflicient length to insure sufiiciently igh resistance between the anode of the transmitting tube andground through the fluid. However, rubber hose is subject to rapid deterioration and can easily be ruptured. To avoid these difficulties, glass tublng has also been heretofore used as a fluid flow conduit and as a subsiitute. for rubber hose. Although the glass' tubing provides-a highly resistive line of flow and is not subject to deterioration, it may be damaged by mechanical shocks and vibration. v

One of the objectsof my invention consists in providing an eflicient fluid flow conduit adapted to establish a relatively high of fluid flow extending from the exterior anode of a high power electron'discharge device and which is of non-fragile and highly durable construction.

Another object consists in fprovidin a of fluid flow con uit which can be quickly and easily assembled and installed in a radio transmitter.

, I accomplish the above desirable objects in a novel'fluid flow conduit in which a double threaded member is provided within a cylindrical casing. v

In the drawings accompanying and forming a part of the specificatioii and'jn' which like reference numerals designate correspondingparts throughout:

Fig. 1 1s a perspective partially: sectioned view of one embodiment of the fluid flow con:

duit of my invention Fig. '2 is'a schematic representation of the through my fluid flow conduit.

pertains in general to elec-,

" rovidin a. considerable- 1930. Serial No..'454,168.

Fig. 3 is a tion of the embodiment of Fig. 1.

Referrin to Fig. 1 a cylindrical member .1, preferabfi composed of a ceramic material, is, formed to provide two exterior helical channels 2 and 3. The shoulders 4 and 14 separating the two channels 2 and 3, which are integral with the memberl, are formed to provide two relatively smaller channels 5 and 16 which are co-extensive with the channels 2 and 3. Two elongated gaskets 6 and 15 are disposed within the channels 5 and 16 in a manner more fully described later.

Referring to Fig. 3, two outlet connections and 8 are secured to one .end of member 1 and two outlet connections 9'and 10 are secured to the other end of the member 1. In

V Fig. 1, the sectional view of outlet connection 9 shows how the same is threaded into the member 1 A hole 11 extending through the r connection 9 meets another hole 12 extending.

through the wall of the member 1 into the channel 2. I

The other outlet'connections are similarly secured to the member 1 as shown in Fig. 3. The connection 7 forms another outlet for the channel 2, while 10 provide outlets. for connections7, 8, 9 and exterior flanges so that the channel 3. These 10 are provided with a water-tight seal can direction, to the fluid surfaces. It will be evident,-then,. that the gaskets 6 and 15 divide the channels 2 and 3 into two continuous paths of flow, as will be seen by reference to Fig.2, in which the.

channels 2 and- 3 are shownscheniatically with reference to the member 1. Therefore, fluid entering the connection 7 will flow in a spiral path along the channel 2 and out throu h the outlet. forcemfthrouglzgthe :a spiral path in the connection 10'will flow in partially sectioned front elevathe connections 8 and.

connection 9, while fluidreverse direction along the a channel 3 and out through the, connection 8.

'88 be made with rubber hose which could extend,- in one direction to the electron discharge form water-tight seals along their contact I This arrangement can be easil installed as the fluid flow conduit for a uid cooled electron discharge device by attaching the proper inlet and outlet hose to the connection outlets.

The construction of this fluid flow conduit, being of compact and highly durable construction, overcomes the major difliculties encountered in the use of other types of fluid flow conduits.

While I have shown a preferred embodiment of my invention, do not wish to be limited thereto except insofar as may be pointed out in the appended claims.

What I claim as new and desire to secure by Letters Patent of the United States, 1s:

' 1. A fluid flow conduit comprising, a cylindrical member having an exterior double helical channel, a casing adapted'to enclose said cylindrical member, and a resilient material interposed between said member and said casing and helically formed in a manner adapted to maintain two independent lines of flow through said double helical channel.

2. A fluid-flow conduit comprising, a cylindrical member composed of a ceramic material and exteriorly threaded, a cyllndrical casing composed of a ceramic materlal and adapted to enclose said member, and a resilient gasket spirally interposed between said member and said casing in a manner adapted to define the exterior threads on said member an outlet connection for each I channel, and

in a continuous helical channel.

3. A fluid flow conduit comprising, a cylindrical member having a double helical channel, a casing adapted to enclose said' double helical channel, and two gaskets helically positioned between, and co-extensive with, said double helical channel, said gaskets adapted to form a fluid-tight seal between said cylindrical member and said casing.

4:. A fluid flow conduit comprising, a cylindrical member having two helical channels, of said channels at each end of said cylindrical member, a casing enclosing said cylindrical member, and two gaskets interposed between said cylincasing.

- ARTHUR M. TROGNER.

drical member and said casing in a manner adapted to enclose said helical channels to form two independent fluid-tight lines of 5, A fluid flow conduit comprising, a cylindrical member comp'osed of insulating material and having a double helical channel, a

casing adapted to enclose said double helical a resilient insulating material interposed between said member and said casing and helically formed in a manner adapted to-maintain two electrically independent lines jOf fluid flow through said double helical chanriel; i 6. A fluid flow conduit comprising, a memher having an exterior double helicalchannel,

.a casing adapted to enclose said member,'and

a resilient material interposed between said 

